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| \  / || | || | ||  |  _ \\  | || | ||  /_   _// 
|  \/  || | || | ||  | |_| || | || | ||    | ||   
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|_|\/|_||  \____//   |_|\_\\   \____//   /__//    
`-`  `-`    `---`    `-` --`    `---`    `--`

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Text this: Stimulation of the catalytic activity of the tyrosine kinase Btk by the adaptor protein Grb2